Chemistry of gold(III) with pyridine-carboxamide ligands

被引：11
作者：
Nasser, Nasser [1 ]
Puddephatt, Richard J. [1 ]
机构：
[1] Univ Western Ontario, Dept Chem, London, ON N6A 5B7, Canada
来源：
POLYHEDRON | 2014年 / 69卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Gold; Pyridine-carboxamide; Amide; Catalysis; RING-OPENING POLYMERIZATION; COORDINATION CHEMISTRY; PALLADIUM(II) COMPLEXES; DIPHOSPHINE LIGAND; CRYSTAL-STRUCTURE; AROMATIC-AMINES; TERTIARY-AMINES; MACROCYCLES; CYANATION; OXIDATION;
D O I：
10.1016/j.poly.2013.11.022
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The pyridine-carboxamide ligand PhNHC(=O)-2-C5H4N reacts with Na+[AuCl4](-) either by cation exchange, to give [PhNHC(=O)-2-C5H4NH][AuCl4], or by ligand substitution to give [AuCl2(kappa(2)-N,N'-PhNC(=O)-2-C5H4N)]. Similar reactions with bis(pyridine-carboxamide) ligands gave complexes [AuCl2(kappa(2)-N,N'-RNC(=O)-2-C5H4N)], with R = (CH2)(3)NHC(=O)-2-C5H4N or 2-C6H4NHC (=O)-2-C5H4N, in which the ligands are bidentate, but no complexes with tetradentate ligands could be isolated. The complex [AuCl2(kappa(2)-N,N'-PhNC(=O)-2-C5H4N)] in methanol solution is an efficient catalyst for oxidative cyanation of PhNMe2 to give PhMeNCH2CN, and it is proposed that the catalysis involves gold(I), gold(II) and gold(III) intermediates. (C) 2013 Elsevier Ltd. All rights reserved.
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收藏
页码：61 / 67
页数：7
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